Fixes Casper instantiation bug from Casper beta3 release
Fixes Casper instantiation bug from Casper beta3 release

aeharding/PhantomCSS,istr/PhantomCSS,shakyShane/css-reg-test,aeharding/PhantomCSS,Huddle/PhantomCSS,tpgmartin/PhantomCSS,marijer/phantomcss_test,stefanteixeira/exemplo-phantomcss-palestra,johnhunter/PhantomCSS,gdseller/PhantomCSS,shakyShane/css-reg-test,stefanteixeira/exemplo-phantomcss-palestra,smrq/PhantomCSS,gdseller/PhantomCSS,istr/PhantomCSS,Huddle/PhantomCSS,tazminweb/PhantomCSS,tazminweb/PhantomCSS,johnhunter/PhantomCSS,tpgmartin/PhantomCSS,smrq/PhantomCSS